| --- |
| license: cc-by-4.0 |
| pretty_name: WaveformQA VCD Traces |
| language: |
| - en |
| tags: |
| - vcd |
| - waveform |
| - risc-v |
| - hardware |
| - rtl-simulation |
| - temporal-reasoning |
| - benchmark |
| size_categories: |
| - n<1K |
| viewer: false |
| --- |
| |
| # WaveformQA VCD Traces |
|
|
| The 13 VCD traces used by [WaveformQA](https://github.com/tenstorrent/waveformqa), a benchmark for evaluating LLM temporal reasoning over digital signal traces (IEEE ICLAD 2026). The traces were produced by RTL simulation of five open-source RISC-V cores running firmware workloads (~3.3 GB total). |
|
|
| The questions, ground-truth answers, evaluation harness, and per-core generation instructions live in the GitHub repository; this dataset only holds the traces. |
|
|
| ## Files |
|
|
| A single archive, `waveformqa_vcds.zip` (~364 MB; ~3.3 GB extracted), containing a `LICENSE` file (the CC-BY-4.0 terms and third-party attributions below) and one IEEE 1364 VCD file per trace: |
|
|
| | Core | Upstream license | Traces | Signal range | |
| |------|------------------|--------|--------------| |
| | [DarkRISCV](https://github.com/darklife/darkriscv) | BSD-3-Clause | `darkriscv_coremark.vcd`, `darkriscv_dhrystone.vcd`, `darkriscv_mandelbrot.vcd` | ~394 | |
| | [PicoRV32](https://github.com/YosysHQ/picorv32) | ISC | `picorv32_custom.vcd`, `picorv32_dhrystone.vcd` | ~338 | |
| | [biRISCV](https://github.com/ultraembedded/biriscv) | Apache-2.0 | `biriscv_custom.vcd`, `biriscv_tcm_soc.vcd`, `biriscv_tcm_soc_custom.vcd`, `biriscv_testbench.vcd` | 1,642-2,295 | |
| | [Ibex](https://github.com/lowRISC/ibex) | Apache-2.0 | `ibex_custom.vcd`, `ibex_dhrystone.vcd` | ~4,185 | |
| | [SERV](https://github.com/olofk/serv) | ISC | `serv_custom.vcd`, `serv_hello_world.vcd` | ~957 | |
|
|
| ## Usage |
|
|
| Download the archive, extract it into `vcds/` in a clone of the repository, and point the benchmark runner at it: |
|
|
| ```bash |
| hf download dcummingsTT/waveformqa waveformqa_vcds.zip --repo-type dataset --local-dir vcds |
| unzip -o vcds/waveformqa_vcds.zip -d vcds |
| rm vcds/waveformqa_vcds.zip # optional: delete the archive once extracted |
| uv run python scripts/run_benchmark.py benchmark/t5000 --vcd-dir vcds --eval-only \ |
| -o output/t5000/evaluation_results.json |
| ``` |
|
|
| See the repository README (**Getting Started**) for the full set of runner flags. |
|
|
| ## License |
|
|
| Copyright 2026 Tenstorrent USA, Inc. |
|
|
| The VCD traces are generated by simulating the third-party RISC-V cores listed above and are licensed under [CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/legalcode). Signal names and design hierarchy in the traces derive from those cores, which remain under their own licenses. |
|
|
| The ibex_custom and ibex_dhrystone traces derive from the Ibex core. Its upstream NOTICE file reads: |
|
|
| ```text |
| The Ibex Project |
| Copyright 2024 lowRISC contributors. |
| |
| This product includes hardware and/or software developed as part of the |
| Ibex(R) (https://github.com/lowRISC/ibex) and OpenTitan(R) projects. |
| |
| Ibex was originally developed by the PULP team at ETH Zurich and University of |
| Bologna under the name zero-riscy. Ibex verification, performance enhancement |
| and security hardening have been supported by the OpenTitan project |
| (https://www.opentitan.org). |
| ``` |
|
|
| The serv_hello_world trace was produced by running the Zephyr RTOS hello-world image shipped with SERV (Zephyr is Apache-2.0). See [NOTICE](https://github.com/tenstorrent/waveformqa/blob/main/NOTICE) in the repository for full third-party attributions. |
|
|
| ## Citation |
|
|
| ```bibtex |
| @misc{liu2026waveformqabenchmarkingllmtemporal, |
| title={WaveformQA: Benchmarking LLM Temporal Reasoning on Digital Waveforms}, |
| author={Yichuan Liu and Daniel Cummings and Nick Vadlamudi}, |
| year={2026}, |
| eprint={2607.20638}, |
| archivePrefix={arXiv}, |
| primaryClass={cs.AI}, |
| url={https://arxiv.org/abs/2607.20638}, |
| } |
| ``` |
|
|
